Knife frame attaching means for multiple reciprocating blade bread slicing machines



KNIFE FRAME ATTACHING MEANS FOR MULTIPLE RECIPROCATING BLADE BREADSLICING MACHINES March 1948- c; H. PETSKEYES 2,437,122

' Filed June 9, 1945 3 Sheets-Sheet 1 INVENTOR.

flax 17/01/29 March 1943- 'c. H. PETSKEYES 2,437,122

KNIFE FRAME ATTACHING MEANS Eon MULTIPLE RECIPROCATING BLADE BREADSLICING MACHINES Filed June 9, 1945 3 Sheets-Sheet 2 INVENTOR.

March 2, 1948. c PETSKEYES 2,437,122

KNIFE FRAME ATTACHING MEANS FOR MULTIPLE RECIPROCATING BLADE BREADSLICING MACHINES Filed June 9,- 1945 3 Sheets-Sheet 3 H INVENTOR.(fidr/a A. @731? 6 57 BY I //zs i fd/77 Patented Mar. 2, 1948 MULTIPLERECIPROCATING BREAD SLICING MACHINES BLADE Charles H. Petsk'eyes,Davenport, Iowa; assignor to Gellinan Manufacturing Company, RockIsland; 111., a corporation of Illinois Aijifimibn 3111189; 1945,vSerial No. 598w 1 Claim;

This inventionrelate'sto certain new and useful improvements in knifeframe attaching means for multiple reciprocating blade bread slicingmachines and has'for its principal object the provision of an improvedconstruction of this character" which" will be highly eflicient in u'se'and economical-inmanufacture. g In bread'slicing machine's of thety'pedisclosed in U. S. Patent No. 2,024,414; it hasb een by experiencedetermined that themost efficient and e'conomicalslicing offresh breadso as to avoid waste and excessivecrumbisor'tea'ringor otherwiserupturing" the loaf of bread} is obtained by a bread slicing mach ne inwhich the slicing knives reciprocate uniformly at'highspeed and Withoutwhat is'kn'own lnthe' art'as walking or"buckllrig. M g Y It is thereforean object of invention' to provide a breadslicing'machine in which theknives are reciprocate'd at maximum speed, with the minimum degree ofvnoise and without a tendency to creep or walk. I

It'is another object of the. invention tojpro' vide'- a mounting for'theslicing knives" which will be flexible to permit of "any variationcaused by the movement ofthe slicing knife mountings.

Another object of the invention is the provision of adrivingmeansfor-slieihg' knife means which requires the shortestpossible stroke, thus resultin in the maximum'efficiency of slicingoperation upon the bread. A still further object of the inyentlon is'toprovide in a bread slicing machine a frame carrying the slicingknives and a. saddle carryingthe frame, whereby the frame may be removedfrom the; saddle without removal of anysubstantial partof theslicingmachine, thus facilitating removal of the knives for replacementor repair.

Other objects will appear hereinafter.

The invention consists in the novel combination and arrangement of partsto be hereinafter described and claimed.

The invention will be best understood by reference to the accompanyingdrawings showing the preferred form of construction, and in which:

Fig. 1 is a side elevational view of a bread slicing machine with whichmy invention is associated;

Fig. 2 is a part sectional and elevational view illustrating therelationship between one of the knife carrying frames and saddlestherefor, em bodied in the invention;

Fig. 3 is a fragmentary sectional detail view illustrating the knifecarrying frames and saddles therefor together with the driving meshesnism for the frames; and I Fig; 4 is afhaglnehtaiy View taken substamtially'on' line 4-401? Fig. 2. y

The drawings illusti'ate the preferred forth- (if construction by whichthe several object'sef my invention are accomplishedand isthe preferredform of constructionby which I'have'foiihd that the-best results-can beaccomplished.

Referring to the" d'fai't' ings, my improved bread slicing machine isindicated atl0}; In 1 chine includes an inclined runway ll te wniehbreadis transferred from a conveyer m e12 for gravitation; down aninclined-chute I te the slicing knives Mandthence to a ghidew abreadwrappin machine (not shown)- t ter constructed -substantially in accordsh Unite- 1 Staf fPaten'ts 232765903 aasatz'c 2,235,503;2,232,55-ej-and'2,2s0,i97;

The bread slicing" machine ill ificlfldes a housing l6 which l iousestheknives M.

knives M are arranged in substant relation with respect to -each otheracated opposite directions and are arrai'i sets; indic-ated'atilafid l8;naensefi o' is' supported by ermine l9. Each 'fia'm lower rail28carrie'sa aaesverseiyexte 2! havin a noriz ntainan'ge '22 provided" 77equally spaced slots forthef r'eception 'offthe lower end portions 23 ofthe knives" so as todisposiethe pin elements 2146f said knivesbeneaththe hi e 22'. The upper end portionsl ofj the k" carry pin elements 26'adapted" te haveconifec tio-n as at 21' with levers 28-.- These lever28' are pivotally' carried by aimountin gplat'e all movab'l-yconnected'to the upper rail S'Fof he frame. Corresponding" end?portionsof t portions ZS 'are'bi'furcated as at 32* and g into thesebifurcated end portions are stud shafts 33. Disposed between washerelements 34 carried by the stud shafts 33 and the bifurcated endportions 32 of the levers 28, are spring members 35, the arrangementbeing such that by adjusting nuts 36 upon the studs 33, the springs 35may be compressed and thereby effect pivotal movement of the levers 28to render the knives l4 taut and substantially straight.

Each frame I9 has formed on opposite side rails 31 thereof, laterallyextending lugs 38. These lugs are pivotally connected by means of a nutbearing screw stud 40' to links M formed on bearing sleeves 38' throughwhich reciprocate the posts 39, the lower ends of which are connected asat 40 to bearing sleeves 42. The bearing sleeves 42 have laterallyextending links 42' side walls 55 of the casing 52.

pivotally connected by means of pins 4| to lugs 43 carried by thehousing 16 as at 44. By this arrangement the frames may have lateralmovement relative to each other and thereby in effect be substantiallyself-adjustable during slicing operation. These frames at their lowerend portions, carry oppositely disposed lateral projections 45 providinggrooves 49 for the reception of the side rails 41 of a saddle 49 thelatter being formed substantially U-shaped, and between the side rails41 of which the frame I9 is mounted.

Each saddle 49 has secured thereto, as at 59, rod elements A suitablecasing is indicated at 52, and this casing 52 is secured as at 53 to awall element 54 of the housing [6. These rod elements 51 reciprocatethrough bearing sleeves 54 formed as an integral part of the adjacentThe lower end portions of these rod elements 5| are connected as at 59to bearings 51 formed as an integral part of a crosshead 59. Thiscrosshead 58 has a depending web 59 operating between a suitable guide69. The lower end portion of this web 59 is connected by means of a pin6| to a connecting rod 62 having a suitable bearing 63 embracing thecrank portion 64 of a suitable crank shaft 95. This crank shaft 65 isjournaled in suitable bearings 66 carried by adjacent side walls 61 ofthe casing 52. The ends 68 of this crank shaft each carry a suitable fiywheel 69, and one or both of these fiy wheels are driven by a suitabledrive belt 19 (Fig. 3).

. The arrangement is such that upon rotation of the crank shaft 69, therods 5| will be caused to reciprocate in their bearing sleeves 54 andthus reciprocate the saddles 49, and as these saddles 49 reciprocatethey carry the frames l9 therewith, and upon reciprocation of theseframes Hi the bearing sleeves 38 thereof reciprocate with respect to theposts 39. Inasmuch as the connection between these posts 39 and the wallof the housing, is of a hinged type, it is obvious that the framemembers adjust themselves to accommodate for any variation ofrelationship therebetween due to their reciprocation. This renders theframes self-adjustable and permits them to assume a position withrespect to each other .which will have the greatest eificiency upon thebread during the slicing operation.

It is also important to note that by the provision of the crosshead andconnecting the same directly to the crank portion 64, I have providedthe shortest possible movement of the saddle through a minimum of space,thus resulting in a short but positive reciprocatory movement betweenthe frames. With this short and positive reciprocatory movement betweenthe frames, the knives will have a very definite slicing effect upon thebread, with the result that in order to slice the bread it is notnecessary for the knives to move an excessive distance in eitherdirection. This results in the reduction to a minimum of the amount ofcrumbs and has the effect of preventing the bread from being buckled orwarped and from being torn or otherwise ruptured.

Should it be necessary to remove the frame l9, all that is necessary isto remove the nut of each screw stud 49' and lift the frame from itsmounting, the post 39.

The open end portion I6 of the housing It is normally closed by asuitable cover ll.

While I have illustrated and described the preferred form ofconstruction for carrying my invention into effect, this is capable ofvariation and modification, without departing from the spirit of theinvention. I, therefore, do not wish to be limited to the precisedetails of construction set forth, but desireto avail myself of suchvariations and modifications as come within the scope of the appendedclaim.

Having thus described my invention, what I claim as new and desire toprotect by Letters Patent is:

A'bread slicing machine including a housing comprising a pair of saddlesadapted to reciprocate in opposite directions with respect to eachother, means for reciprocating said saddles in said opposite directionswith respect to each other, frame members carried by saidsaddles andreciprocable therewith, slicing members carried by said frame members,means providing hinged connection between said frame members, to permitsaid frame members to have horizontal self-adjustment relative to eachother to adjust themselves in position upon said saddles, saidlast-named means comprising arms arranged in pairs and pivotallyconnected together by vertically extending lugs fixed to the housing ateach side of the saddles, posts extending upwardly from the other endsof the said arms, and bearing sleeves carried by the frames and slidableon the posts to provide a reciprocable connection between said posts andsaid frames.

CHARLES H, PETSKEYES.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number

